Folding Bread Proofing Box 3 Sided Heating Dough Proofer with 50 to 113 degrees F Temp Control Timer for Sourdough white.Feature: 1. Efficient Heating Zones: Three dedicated heating zones (front, rear, and bottom) work together to deliver consistent, rapid warmth every time. The temperature adjusts from 50 to 113 degrees F to meet your specific needs and includes a timer set for up to 48 hours. 2. Excellent Thermal Stability: This proofing box features a five layer insulation system for outstand